13. OPTIMIZATION

CHAPTER 13 'OPTIMISATION' 13 2) For the " Beams " section exactly the same as those of the pillar module apply. 3) The next two sections deal with finite surface element cross sections "Surface 3D" and "Surface 2D" . The mode of operation is the same in both cases. So by selecting the "3D Surfaces" section you can add surface cross sections either from the List or Graphics. With the "List" option the list of different cross-sections of the surface is displayed. The criteria for categorising the cross-sections are as follows: • The thickness • The material • The Layer • If it is horizontal or vertical By entering the cross-section